993642911 has 8 divisors (see below), whose sum is σ = 1054373184. Its totient is φ = 933166080.

The previous prime is 993642899. The next prime is 993642917. The reversal of 993642911 is 119246399.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993642911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993642917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55250 + ... + 70991.

It is an arithmetic number, because the mean of its divisors is an integer number (131796648).

Almost surely, 2^993642911 is an apocalyptic number.

993642911 is a deficient number, since it is larger than the sum of its proper divisors (60730273).

993642911 is a wasteful number, since it uses less digits than its factorization.

993642911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126721.

The product of its digits is 104976, while the sum is 44.

The square root of 993642911 is about 31522.1019445087. The cubic root of 993642911 is about 997.8764641207.

The spelling of 993642911 in words is "nine hundred ninety-three million, six hundred forty-two thousand, nine hundred eleven".